I have a mate in Dragonair who has just done the same. He is a training captain and has handed in his notice to go to Oasis as a FO.
Reasons,
Had enough of HK.
Boring routes.
!!!!e company.
Fair play, that's what I say.
Yes, I know Oasis doesn't have much of a route network but I guess they are up and coming, plus maybe bases in the future.